| 光学与力学的相干耦合分析 |
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| 引用本文： | 陆启生,蒋志平,刘泽金.光学与力学的相干耦合分析[J].国防科技大学学报,1998,20(4):93-96. |
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| 作者姓名： | 陆启生 蒋志平 刘泽金 |
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| 作者单位： | 国防科技大学应用物理系 |
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| 摘 要： | 叙述了相干Ｒｅｍａｎ声子产生的原理，在特定的条件下估算了探测器内可能产生的应力（简称光生应力）分布。利用二台商品化的脉冲染料ＹＡＧ激光器，功耗只有１０ｋＷ，却能在探测器表面产生脉宽为１０ｎｓ左右，幅度为４０．２ｋｇ／ｃｍ２强冲击应力。讨论和分析了在实际情况下一些主要的非理想因素对光生应力的潜在影响，并且认为相干Ｒａｍａｎ声子所产生的破坏效应比产生相同破坏效果的热效应要节省能量。
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| 关 键 词： | 相干Raman声子，光电探测器，光生应力 |
| 收稿时间： | 1998/4/30 0:00:00 |
Coherent Coupling of Optics with Mechanics |
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| Lu Qisheng,Jiang Zhiping and Liu Zejing.Coherent Coupling of Optics with Mechanics[J].Journal of National University of Defense Technology,1998,20(4):93-96. |
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| Authors: | Lu Qisheng Jiang Zhiping and Liu Zejing |
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| Affiliation: | Department of Applied Physics, NUDT, Changsha, 410073;Department of Applied Physics, NUDT, Changsha, 410073;Department of Applied Physics, NUDT, Changsha, 410073 |
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| Abstract: | After describing the principle of coherent Raman phonon occuration, the photo-produced stress distribution in detectors is estimated in some special conditions. A strong shock stress whth duratoin 10ns, amplitude 40.2 Kg/cm2 may be produced on the surface of detectors, using two commercial YAG dye pulse lasers supplied only with 10KW source. The latent effects of some practical nonideal reasons on the photo-produced stress are analysed and discussed. The realizatoin is also reached that the energy expending of the damage effect resulting from the coherent Raman phonons is less than that of the same effect resulting from thermal effects. |
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| Keywords: | coherent Raman phonon photodetector photo-produced stress |
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